Wiring terminal selection considerations

For the selection of the terminal block, first understand the function of the terminal and the shape of the terminal, and the maximum current of the terminal to select the type. Only after understanding these can the terminal block be selected.

According to the functions of the terminal, there are common terminals, safety terminals, test terminals, grounding terminals, double-layer terminals, double-layer conduction terminals, three-layer terminals, three-layer conduction terminals, one-in and two-out terminals, one-in and three-out terminals. , double input and double output terminals, knife gate terminals, over voltage protection terminals, marking terminals, etc. According to the current classification, it is divided into ordinary terminals (small current terminals) and high current terminals (above 100A or above).

Wiring terminal description: Each connection area is composed of an insulating seat, a U-shaped frame, a nut, a hexagon socket screw and upper and lower movable blocks. A wiring hole is provided between the upper and lower movable blocks relative to the contact surface, and the hexagon socket screw passes through The nut is placed on the upper block, and the purpose is to connect the different thickness of the cable directly to the high current terminal.

It is necessary to understand the function of the terminal. Some terminals have a grounding function. Some terminals are double-conducting and double-conducting terminals. When the line is connected, the link piece can be omitted, and attention must be paid to the details.

It is necessary to understand the shape of the terminal block. Because the power distribution cabinet has limited space, it is necessary to calculate the internal space of the power distribution cabinet, and what kind of terminal can be placed to meet the design requirements.

It is necessary to understand the current of the terminal of the wiring. Everyone needs to pay attention to the selection. The general terminal will be marked on the top. This terminal supports the maximum current and the maximum wire diameter, but sometimes the maximum wire diameter of the terminal is not suitable for the site. Wiring, you need to increase the level, for example, 16mm line, but after the wiring nose, the thread is large, you need to choose 25mm terminal block, everyone needs to pay attention to details in daily selection.